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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int n, m;
  4.  
  5. int LCS(char A[], char B[], int i, int j)
  6. {
  7.     if(i == n || j == m)
  8.     {
  9.         return 0;
  10.     }
  11.     else if(A[i] == B[j])
  12.     {
  13.         return 1 + LCS(A, B, i+1, j+1);
  14.     }
  15.     else
  16.     {
  17.         return max(LCS(A, B, i, j+1), LCS(A, B, i+1, j));
  18.     }
  19.  
  20. }
  21.  
  22. int main()
  23. {
  24.     cin>>n>>m;
  25.     char A[n], B[m];
  26.     cin>>A>>B;
  27.  
  28.     int ans = LCS(A, B, 0, 0);
  29.  
  30.     cout<<ans<<endl;
  31.  
  32. }
  33.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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2 4
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stdout
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2
https://ideone.com/WoK1Gq
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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